.navbar {
    border-color: #111111;
    border-radius: 0;
    background-color: #111111;
}

.navbar-header .logo {
    color: #fff;
    text-transform: uppercase;
}

.header .nav li a {
    color: #fff;
    text-transform: uppercase;
    transition: all ease .3s;
      border-bottom: 2px solid transparent;
}

.header .nav li a:hover {
    border-bottom: 2px solid #fcac45;
}

/* width <768px 时媒体查询 */
@media screen and (max-width:768px) {
    .header .nav li a{
        text-align: center;
    }
    .header .nav li a:hover{
        font-size: 1.6rem;
    }
}